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SHELTER PREFERENCES IN THE ENDEMIC BERMUDIAN HERMIT CRAB, CALCINUS VERRILLI (RATHBUN, 1901) (DECAPODA, ANOMURA)

SHELTER PREFERENCES IN THE ENDEMIC BERMUDIAN HERMIT CRAB, CALCINUS VERRILLI (RATHBUN, 1901)... SHELTER PREFERENCES IN THE ENDEMIC BERMUDIAN HERMIT CRAB, CALCINUS VERRILLI (RATHBUN, 1901) (DECAPODA, ANOMURA) 1 ) BY LISA J. RODRIGUES 2,3 ), DAVID W. DUNHAM 2 ) and KATHRYN A. COATES 2,3 ) 2 ) Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario M5S 3G5, Canada 3 ) Bermuda Biological Station for Research, 17 Biological Lane, St. George’s, Bermuda GE 01 ABSTRACT Calcinus verrilli , a hermit crab endemic to Bermuda, is unusual in that it inhabits both gastropod tubes ( Vermicularia spp. and Dendropoma spp.) and gastropod shells ( Cerithium litteratum ). It was found in both shelter types, in Ž ve marine environments, categorized as intertidal areas, subtidal areas, “boilers”, patch reefs, and rim reefs. We found most males in shells and most females inhabiting tubes. We discovered a size dimorphism, females being larger than males. In the laboratory, when given a choice between shells and tubes, both males and females showed a signiŽ cant preference for shells. In a Y-maze test of attraction to extracts from tube-forming versus shell-forming gastropods, males showed no discrimination, but females preferred the tube- associated extract. These shelter and size dimorphisms in C. verrilli are best explained by http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

SHELTER PREFERENCES IN THE ENDEMIC BERMUDIAN HERMIT CRAB, CALCINUS VERRILLI (RATHBUN, 1901) (DECAPODA, ANOMURA)

Rodrigues, Lisa; Dunham, David; Coates, Kathryn
Crustaceana , Volume 73 (6): 14 – Jan 1, 2000
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216X
eISSN
1568-5403
DOI
10.1163/156854000504769
Publisher site
See Article on Publisher Site

Abstract

SHELTER PREFERENCES IN THE ENDEMIC BERMUDIAN HERMIT CRAB, CALCINUS VERRILLI (RATHBUN, 1901) (DECAPODA, ANOMURA) 1 ) BY LISA J. RODRIGUES 2,3 ), DAVID W. DUNHAM 2 ) and KATHRYN A. COATES 2,3 ) 2 ) Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario M5S 3G5, Canada 3 ) Bermuda Biological Station for Research, 17 Biological Lane, St. George’s, Bermuda GE 01 ABSTRACT Calcinus verrilli , a hermit crab endemic to Bermuda, is unusual in that it inhabits both gastropod tubes ( Vermicularia spp. and Dendropoma spp.) and gastropod shells ( Cerithium litteratum ). It was found in both shelter types, in Ž ve marine environments, categorized as intertidal areas, subtidal areas, “boilers”, patch reefs, and rim reefs. We found most males in shells and most females inhabiting tubes. We discovered a size dimorphism, females being larger than males. In the laboratory, when given a choice between shells and tubes, both males and females showed a signiŽ cant preference for shells. In a Y-maze test of attraction to extracts from tube-forming versus shell-forming gastropods, males showed no discrimination, but females preferred the tube- associated extract. These shelter and size dimorphisms in C. verrilli are best explained by

Journal

Crustaceana – Brill

Published: Jan 1, 2000

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